Rotary water-meter



'(Model.) 2 Sheets--Sheet 1.

R. C. TERRY.

ROTARY WATER METER.

(Model.) 2 Sheets-Sheet 2.

3.0. TERRY. l

l ROTARY WATER METYEB.. y No. 256,409. A Patented Apr. 11, 1882.

Ilm

, @MTRR STATES ATRNT OFFICE.

EDWARD C. TERRY, OF HARTFORD,OONNECIIGU'IKV ROTARY WATER-METER.

SPECIFICATION forming part of Letters Patent No. 256,409, dated April 11, 1882.

Application tiled October 2.4, 1881. (Model.) l

which the following is a specification.

My invention relates to water-metersin which an oval float has both a longitudinal and rotary motionv within a cylindrical case, and in which other peculiar features are. found, as hereinafter described; and the objects of my invention are efficiency, simplicity, and cheap ness. l attain these objects by the mechanism illustrated in the accompanying drawings, in

Figure 1 is a plan view with the cap-plate removed; Fig. 2, a vertical section ou line ma* ot' Fig. l. Fig. 3 is a plan view of the inner face of the cap-plate; Fig. 4, a plan view showing a modification ofthe ioat. Fig. 5 is a perspective view, partly in section, and showing the float in broken lines.

A designates a cylindrical case or chamber, having au enlargement, a, at one side; nB, a cylindrical post stationarily affixed within the case A, and G an oval and hollow loat.- The inside of the iioat C has semi-cylindrical walls at each end and straight walls upon the sides, between said cylindrical walls. The ioat-is placed within the case and over the cylindrical post, the diameter of which is equal to the distance between the opposite inner walls on the two longest sides of the'float. The post is made a little shorter than the vertical length of the inside of the case, so that a slotted crosspiece, b, may extend over the top end ofthe post, as shown. Near one edge ot' postB, atits Lipper end, I place a pin or stud, c, upon which to mount a shaft, if, which is iiattened or provided with a cross-piece at the bottomwhioh fits the slot in the cross-piece b. Near the middle of the enlargement a isa thin plate or cut-o, d, the inner edge of which extends into the case a little farther than would the cylindrical 'wall thereof if continued wholly around the case. A thin horizontal guide-plate, in, about halfway between the top and bottom of the case, extends from the inner edge vof the cut-oft' el to the cylindrical wall of the case upon the inuent side of the cut-olf. The water is let in and out at both top and bottom, the same entering the vertical passage e from a horizontal pipe leading thereto, and discharging through a like passage, f, and into a horizontal pipe vctnnecting thereto, the broken circle in Fig. 2 indicating the point of .connection withV the passages efand said pipes. The horizontal pipes which lead to thepassage eand from the passage f are also indicated by broken lines in Fig. 5. From the ends of the vertical passages channels g l1. lead through the cap D and the bottom portion of the -case to theinterior, the form of which channels is most clearly shown in Figs. 3 and 5. The portions of said channels which are cut off or hid from view in the section Fig. 2 are indicated in broken lines.

The operation is as follows: When the ioat is in the position represented in the drawings both ends of the lioat are in contact with the side walls of the case, and the measuringchamber, which is upon the outside ofthe float, is then closed, because the inlet and outlet channels g h do not extend quite to that side of the float upon which said chamber lies. When the ioat is at this point the water freely enters inside of it, also the outside at the enlargement c, and the line of pressure upon the ioat is indicated by the broken line y y. The water in pressing upon the iioat acts substantially the same. as ifit in fact pressed upon the plane indicated by line y g/,and it is for this reason that l term said plane the line of pressure.77 approaches the enlargement c the water begins to discharge. The vmeasuring-chamber which is inside of the float is closed when the long- ,est axis of the float is in line with the cut-0E d, so that both measuring-chambers are never closed at the same time. the tloat is indicated.l in Fig. l by the broken lines describing an oval, and 'the line of pressure at that pohlt is indicated by the broken line e. In all the various positions of the oat one point ot' it is in contact with the cut-oit' and one point with the cylindrical wall of the case. The slotted cross-piece moves from side to side with the tloat,slidingby theflatteued portion ofthe shaft k, which cannot rotate within the slot, and thereby must rotate with the` oat, so that the shaft makes one revolution for every revolution of the iioat, and thereby furnishes means for the attachment of any ordinary registering mechanism to register tile number of revolutionsof the iioat or the So soon as the rear end of the float.

Another position of amount of water measured. The cross-piece also somewhat assists in properly guiding the movements of the float; but it is principally for the purpose of furnishing means to connect the registering apparatus with the oat. 'Ihe guide m prevents the end ofthe ioat from Working into the enlargement a so far as to withdraw its opposite vend away from the cylindrical wall of the case. I prefer to make the float of hard rubber and the other parts of brass.

Themeter may be operated by admitting the water from only one side; butit is best to admit it from both top and bottom.

If desired, instead of making the post B stationary, it might be fiat-tened uponopposite sides and tted to the inside of the iioat, as shown in Fig. 4, when itcould be mounted so as to revolve on its axis and impart precisely the same motion to tbcfioat as before described.

I claim as my invention- 1. In a Water-meter, the combination of a cylindrical case, having an enlargement at one side, with an oval float having both a longitudinal and rotary movement Within said case, substantially as described, and for the purpose' specified.

2. The combination of the cylindrical ease, the hollow oval oat, the post B, and the cutoft' d, substantially as described, and for the purpose specified.

3. The combination ot' the cylindrical case having the enlargement a, the float G, post B, cut-olf d, and guide on, substantially as described, and for the purpose specified.

4. The combination of the case A, oval ioat C, slotted cross-piece b, shaft k, and post B, substantially as described, and for the purpose specied.

5. The combination ofthe case A, oval and hollow oat C, post B, and outlet and inlet channels g h, located with reference to the end of the iloat substantially as described, and for the purpose specitied.

6. In a water-meter, the passages c f, with the transverseinlet and outlet channels at bo'tb ends thereof leading to and from the interior of the case, substantially as described, and for the purpose specified.

EDWARD C. TERRY.

Witnesses:

NVM. KNOX, B. F. HAYNEs. 

